Form-holder and wall-tie.



H. G.TENHOLDER.

FORM HOLDER AND WALL TIE.

APPLICATION FILED NOV. 20. I916.

Patented May 1, 1917.

f I G. TENHOLDER, OF BEAUMONT, TEXAS, ASSIGNOR OF ONE-HALF TO GEO, SMYTHLUMBER COMPANY, OF BEAUMONT, TEXAS, A CORPORATION OF TEXAS.

roam-nouns AND want-rm.

To all whom it may concern:

Be it known that I, HERMAN G. TEN- HOLDER, a citizen of the UnitedStates, residing at Beaumont,'in the county of Jefferson and State ofTexas, have invented certain new and useful Improvements in Thisinvention relates to building .con-

struction, and particularly to a form holder and wall tie for use in theconstruction ofconcrete or other plastic formed Wall structures in whichtemporary molds or forms are employed to receive the plastic materialwhich is subsequently permitted to set and harden to form the finishedwall or cast.

It is one of the objects of the present 'invention to provide a formholder and wall tie which may be manufactured in large quantities andthus at relatively small ex-' pense, and which is capable of beingreadily used in the tem orary erection of sectional demountable ormstructures or mold boards.

It is a further object of the present invention to provide a form holderand wall tie which may be generally distributed among builders supplystores or dealers, and carried by them in stock in various sizes as willbe determined by the nature of the structure, and further to provide aform holder and wall tie which may be e'fiicientl and readily applied atany desired position in the form structure being erected without havingdefinite or fixed co-active positions with the other structural elementsexcept to accomplish its urpose of holdin the mold sections or mem ersin the desire assembled relation.

A further object of the present invention is to provide a unitary formholder and wall tie especially capable of use in the erection of doublewall forms or molds and which provides for the ready removal of theprojecting portions whichhave served to carry the outside wall formingmolds during their service. To' the accomplishment of these and otherobjects, as will be apparent to those skilled in the art, the presentinvention consists in an integral form holder and wall tie in the formof a bar which may be Specification of Letters Patent.

Patented May ti, iaia.

Application filed November 20, 1918. Serial No. 132,418.

of suitable material, such for instance as cast iron, etc., havingformed upon its length transverse-seats in which may be arranged theedges of the concrete forms or molds-which are to be sustained and whichtie is provided at its, ends with retaining heads or shoulders, thesebeing connected by a contracted neck portion to the inner or main bodyportion of the tie so that after the service of the tie these heads oroutwardly projecting shoulders may be removed by striking them a blowand causing the fracture of the neck, the latter preferably being formedby inwardly convergent notches the roots of which lie substantially inthe plane of one side of the outer seat at each end of the tie so as toproduce a fracture which will be substantially flush with the surface ofthe cast wall.

In the following specification and the accompanying drawings a preferredform of the invention is described and illustrated in which the wall tieand form holder consists of a cast integral bar, and in the drawin s:

Figure 1 is a perspective view showing the form holder and wall tie asapplied in the erection of the form and the construction of a hollowwall.

Fig. 2 is a side elevation of one of the ties, and

Fig. 3 is a bottom plan view of the same.

Heretofore in my knowledge temporary or false work forms or molds usedin the erection of-concrete structures have generally involved a complexset of reinforcing ties, clips, braces, and other associated membersusually requiring expert care in the assembling, and being of limiteduse and arrangement in the construction of, the molds in practice. By mypresent invention it is intended to provide a simple and substan'tialform of form holder and wall tie which ma be universally? applied to theerection o hollow or solid walls in the erection of which there areemployed mold boards or mold sections which are indicated at 2, Fig. 1,in the construction of the hollow wall 3. These mold boards or sections2 are usually of a given length, thickness and height, and preferablyare to be used repeate ly in the construction of the wall 3 by removingthe lower mold members 2 from the lower portion of the wallafter thishas solidified and re lacing them at higher points in the mol structure.My

present invention contemplates the use of out the mold structure and isillustrated in tits-preferred embodiment here as consisting "of a bar 5of suitable length and width an thickness as may be-determined by thesize of the wall and mold structure with which it is to be used. The bar5 may be provided along each of its sides, or along opposite sides, oralong only one side as 1s shown in Fig.2, witha series of seats 6disposed transversely of the bar 5, these seats in this instance beingformed u on the lower side of the bar 5 by downward y projectin ears orflange-like portions 7, the inner or a jacent surfaces 8 of which form'the side retainin'gmeans between which the edge of a mold section 2 maybe inserted, it being understood that the width of the seats 6 aredetermined by the thickness of the mold section.

In the construction of hollow walls it will be understood that the innermold board members 1010 will be assembled between the inner pair ofseats 6-6 and the outer mold board members 2 will be engaged andsupported by the seats 6-6 at the ends of the tie.

In practice the mold sections 2 and 10 are built up from a suitablefoundation structure and at suitable points throu bout the mold or formthe bars 5 are p aced transversely across the top edges of the formsections or mold boards so as to substantially engage and reinforce orbrace the mold sections-throughout the course, and

superposed sections are laid upon one another to the desired hei ht,each of which is supported and brace b the insertion of the form holdersthrougout the struc-" ture.

It is desirable, after the concrete forming the wall structure 3 hassolidified, that the endmost seat portions 66 of the bar may be removedand to that end the outer end of each bar, which is provided with aheadlike piece 9-9, is preferably broken away,

.the bar being so formed that the fracture of the breakwill preferablyoccur at the planeof the inner wall 8--8 of each form older or tie. Inthe embodiment of the inventionwhich I prefer the ends or heads 99 areof substantially pyramidal form with the apexes of the pyramids being00-- incident w1th the major axis of the bar 5, it being understood thatthe u, per and inner portion 9' of each of the eads 9 thus serves tosupport the lower outer edge or corner of each of the superposedsections of the molds 2 and 10. After the concrete has hardened theheads 9 are struck a light blow and this will cause a fracture of theprojecting ends of the bar 5 exposed b the removal of the mold sections2 an 10. Preferably the line of fracture. is caused to ,sistingpf acasting having a series of form occur as near as possible to the flushouter surface of the wall 3, and one manner of achieving this line offracture is to reduce the diameter of the bar 5 adjacent each end sothat the line of least strength of the bar is produced at the point 11which is substantially in the plane of the outer face of the shoulder 7of the bar 5 as seen in Fig. 2.

The, neck at each end of the bar is therefore preferably formed by aninwardly convergent angular notch 12 having shoulder 13 perpendicular tothe length of the bar and in the same plane as the surface 8 of theinner shoulder 7-7 of the bar. From this construction it will be seenthat in almost every instance after the mold sections 2 and 10 haveserved their purpose and been removed from the form structure, theexposed head portions 9 at each end of the bar may be broken OE and theline of fracture will be produced at the line 1111 in the plane 13 ofthe notched ends of the bar. By this form of form holder and wall tiethe wall structure may be erected rapidly and eco- 9o nomically and thetie will lie flush with the form or wall and will securely hold thesections during. erection, and will prevent them from slip mg, and willhold them in true vertical a mement during the pouring of the concrete.The bar is of such form as to be substantial and economical in weight,and thus enables its manufacture and shipment I at low cost.

,and the air space left between the walls,

and for the different size forms, as occasion may require, and will beof such roportions as to meet the requirements of a l compressive andtensile strains and thus provide for the eflicient interiorbracin ofhollow wall structure such as is here in icated, althou h it is to beunderstood that the clip may e as efiiciently used in solid wallstructure.

What is claimed as new is:

1. A form holder and hollow wall tie conseats sposed transversely in itslength and having a tapering head at each end connetted to the bar atreduced frangible neck portions, andlugs opposed to the bases of saidheads at-the ends of the reduced necks.

2. A form holder and hollow wall tie consisting of a unitary bar havinga series of form seats disposed transversely in its length and having apyramidal head at each end connected at the bases to the bar by reduced.frangible neck portions which are coincident with the end seats, thebases of the heads projecting above and below the faces of the bar.

3. Alconcrete form holder and wall tie consisting ofa her having on oneface, near each end, projecting shoulders forming seats for moldsections, outwardly tapering heads at the ends of the bar the bases ofwhich project above and below the faces of the bar to a wall tie havingon one face seats between transverse lugs for mold sections and notchedat its opposite edges to form fracture lines coincldent withcertainfaces of the seats, and between the lugs.

5. An integral mold or form holder and wall tie having adjacent its endspairs of shoulders, each pair forming therebetween a seat, and the sidesof said seats having angular notches forming weakened planes in the bodycoincident with the inner shoulder of the end seats. o

6. A mold and wall tie consisting of a relatively flat body having onone face pairs of lugs extending from edge to edge and formingtransverse mold section seats, and its opposite face having transverseend lugs,

from edge to edge, the inner faces of which form rests. I

7. A mold and wall tie consisting of a relatively flat body having onone face pairs of lugs forming continuous transverse mold section seatsor channels, and its opposite face having continuous transverse endlugs, the inner faces of which form rests, the edges of the bar betweensaid end lugs and the next adjacent lug being oppositely notched to formweakened areas coincident to the end seats.

8. An integral mold and wall tie consisting of a relatively fiat bodyhaving on one face pairs of lugs forming transverse mold section seats,and its opposite face having transverse lugs, the inner faces of whichform rests, the opposite edges of the bar being notched between the endand inner lugs to form weakened areas coincident to the end seats, andthe inner walls of the notches being alined with faces of adjacent lugs.

In testimony whereof I aifix my signature in presence of two witnesses.

mRMAN G. TENHOLDER.

